Leases - Additional Information (Detail) - USD ($)		3 Months Ended		9 Months Ended
	Aug. 28, 2020	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2022	Oct. 31, 2021	Oct. 09, 2020	Sep. 30, 2020
Lessee, Lease, Description [Line Items]
Operating Lease, Expense		$ 101,000	$ 99,000	$ 315,000	$ 301,000
Operating lease term	3 years
Operating leases paid in cash		101,000	$ 104,000	344,000	$ 320,000
New Lease Agreement [Member]
Lessee, Lease, Description [Line Items]
Assets	$ 352,000	$ 436,000		436,000		$ 396,000		$ 254,000	$ 970,000
New Lease Agreement [Member] | Renewal Event [Member]
Lessee, Lease, Description [Line Items]
Assets							$ 39,000
New Lease Agreement [Member] | Square Footage Leased Event [Member]
Lessee, Lease, Description [Line Items]
Decrease In Leasing Arrangements Right Of Use Asset And Lease Liability				$ 39,000
Blaw Knox Product Line From Volvo CE [Member] | New Lease Agreement [Member]
Lessee, Lease, Description [Line Items]
Operating lease term								1 year
Operating lease liability date of expiry	Aug. 31, 2023